Use of abstraction to make it more specific and clean

(fix):Add OnInit method for the label to use on app-attribute-label

See merge request !98

This is a simple patch to test the validity of the previous temporary
fix. See previous commit for details.

WARNING: This is a temporary fix for the labelling of data on bootstrap array on
the front-end. Sall be fixed by further development on the server.

Finish refactor and add some tests

See merge request !97

Notably, some tests to check the throwing of errors

Merge branch '128-make-possible-to-inject-dynamically-a-one-line-array-of-datatable-in-the-detail-page' into 'develop'

Resolve "Make possible to inject dynamically a one line array of datatable in the detail page"

Closes #128

See merge request !96

Resolve "Client: Make possible to add simple form"

Closes #123

See merge request !93

Use ngx-dynamic-hooks library to load dynamically the component and make
the latter available through the admin interface of anis

Resolve "Menu : ajouter un lien Ext"

Closes #117

See merge request !94

Resolve "Design (Multiple) : ajout option changer le texte de la ProgressBar"

Closes #122

See merge request !88

# Conflicts:
#   conf-dev/create-db.sh
#   server/doctrine-proxy/__CG__AppEntityInstance.php

Resolve "Correctifs Client"

Closes #112

See merge request !90

# Conflicts:
#   conf-dev/create-db.sh
#   server/doctrine-proxy/__CG__AppEntityInstance.php